Selenium/Ruby/Inside MediaWiki-Vagrant virtual machine

For this example, we will not enable any roles and we will use MediaWiki core.

Advantages

Running Selenium tests from inside MediaWiki-Vagrant machine has several advantages:

• You do not have to install anything on your machine, except MediaWiki-Vagrant itself, and it's dependencies.
• It will also be fast, since the target machine is local.
  • MediaWiki core Selenium test run takes about 3-4 minutes on my machine.
  • It takes about 6-7 minutes for selenium-Core Jenkins job to run.
• After everything is set up, you do not need internet connection.
• You are probably already familiar with MediaWiki-Vagrant and have it installed.
• While the tests are running, you can continue using your machine as usual, because everything is happening inside the virtual machine.

Disadvantages

• You might not be familiar with MediaWiki-Vagrant, so you will have to learn how to install and use yet another tool.
• You will have to install MediaWiki-Vagrant and it's dependencies on your machine.
• The machine is headless (no display) so it is harder to debug failed tests, but not impossible.

Set up MediaWiki-Vagrant

• Follow instructions at MediaWiki-Vagrant

Boot the machine

$ vagrant up

SSH into the machine

$ vagrant ssh

Go to an extension folder

$ cd /vagrant/mediawiki/extensions/EXTENSION

Install dependencies in the machine

You will need internet access for this step. Ruby 2.0 or newer is required. Third-party tools like rbenv or RVM are not required.

$ sudo apt-get install chromedriver xvfb

$ sudo gem install bundler --no-rdoc --no-ri

$ bundle install

Run the Selenium tests

$ export PATH=$PATH:/usr/lib/chromium/
$ MEDIAWIKI_ENVIRONMENT=mw-vagrant-guest bundle exec rake selenium

Exit the machine

• ctrl+d or logout

vagrant@mediawiki-vagrant:~$ logout
Connection to 127.0.0.1 closed.

suspend or halt the machine

$ vagrant suspend
==> default: Saving VM state and suspending execution...

or

$ vagrant halt
==> default: Attempting graceful shutdown of VM...